Is CVE-2020-12388 in the CISA KEV catalog?

No. CVE-2020-12388 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-12388?

CVE-2020-12388 has a CVSS v3 base score of 10.0 (CRITICAL).

What is the EPSS score for CVE-2020-12388?

CVE-2020-12388 has an EPSS score of 2.71% (84th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-12388?

Upgrade DeveloperEdition to 76.0 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2020-12388

CRITICALEPSS 84th pctl

10.0

CVSS v3

NVD

Description

The Firefox content processes did not sufficiently lockdown access control which could result in a sandbox escape. *Note: this issue only affects Firefox on Windows operating systems.*. This vulnerability affects Firefox ESR < 68.8 and Firefox < 76.

CWE-20Improper Input Validation

How to fix

Remediation Available

DeveloperEditionWindows application

Affected:76.0Fixed in:76.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:76.0Fixed in:76.0Mozilla

Mozilla Firefox ESR (en-US)Windows application

Affected:68.8.0Fixed in:68.8.0Mozilla

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Exploit Intelligence

2.71%probability of exploitation in 30 days

84thpercentile

Elevated risk: more likely to be exploited than 84% of all known CVEs.

References

Vendor Advisory3

Third-Party Advisory1

packetstormsecurity.com

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.